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Finding the Fourth Proportional to 450.36, 676.76 and 255.66

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Solution

The fourth proportional to 450.36, 676.76 and 255.66 is: 384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.36 : 676.76 = 255.66 : x
  2. Step 2: Convert to fraction form
    450.36/676.76 = 255.66/x
  3. Step 3: Cross multiply
    450.36x = 676.76 × 255.66
  4. Step 4: Simplify right side
    450.36x = 173,016.65
  5. Step 5: Solve for x
    x = 173,016.65/450.36
  6. Step 6: Final answer
    x = 384.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.